JT 6658A/B Fire Resistant Epoxy Resin Curing Agent for Electrical Insulators - 65-78 N/mm² Tensile Strength, 8000-9500 N/mm² E Modulus
JT 6658A/B epoxy resin curing agent system is a fire-resistant, silica flour-filled formulation specifically designed for electrical insulation applications. This CE-certified system offers excellent processing characteristics for transformer manufacturing.
- Long pot-life with short gel-time under high temperature
- Excellent mechanical and electrical properties
- Superior crack resistance
- Convenient processing with excellent impregnating performance
- Pre-filled with silica flour for simplified handling
- Instrument transformers
- Dry type distribution transformers
- Conventional casting with stage-wise curing
- Pressure gelation (PG process)
- Automatic pressure gelatin casting (APG process)
| Component | Property | Test Condition | Value Range |
|---|---|---|---|
| JT 8058A (Resin) | Aspect | Visual | Red paste |
| Viscosity | At 40℃ | 2000 - 5000 Mpa.s | |
| Specific weight | At 20℃ | 1.55 - 1.62 g/cm³ | |
| Filler content | % by weight | 47 - 52 | |
| JT 8058B (Hardener) | Aspect | Visual | Red paste |
| Viscosity | At 40℃ | 1500 - 3000 Mpa.s | |
| Density | At 20℃ | 1.70 - 1.80 g/cm³ | |
| Filler content | % by weight | 52 - 58 |
| Property | Test Standard | Value Range |
|---|---|---|
| Tensile strength | ISO R 527:1993 | 65 - 78 N/mm² |
| Elongation at break | ISO R 527:1993 | 1.8 - 2.0% |
| E modulus (tensile) | ISO R 527:1993 | 8000 - 9500 N/mm² |
| Flexural strength | ISO 178:2001 | 110 - 125 MPa |
| Glass transition temperature | ISO 11357-2:1999 | 65 - 80°C |
| Water absorption | ISO 62 | 0.15 - 0.20% by wt. |
| Density at 20°C | - | 1.65 - 1.75 g/cm³ |
Storage Conditions: Store components under dry conditions at 5-25°C in tightly sealed original containers. Shelf life corresponds to expiry date on label.
Important Notes: JT 8055B contains accelerator. Prolonged storage at high temperatures increases viscosity and impairs reactivity. Sensitive to moisture. Partly emptied containers must be resealed immediately.
Hubei Jiangte Insulation Composite
Address: No.219, Zhanghua Rd(N), Economic & Development Zone of Qianjiang City, Hubei Province, China
Tel: +86-728-6201068 | Fax: +86-728-6202066
Guangzhou Jiangte Insulation Composite
Address: Rm606, DongHong International Plaza, No.113, Chebei Rd, Tianhe District, Guangzhou, China
Tel: +86-20-82320316 | Fax: +86-20-82315407
Pre-filled means the resin or hardener has been filled with silica sands before delivery to simplify your manufacturing process.
We've already added flexibilizers and accelerators into the resin/hardener formulation before delivery, making our materials ready-to-use without additional additives.
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